Editing Module:Case

local p = {} --p stands for package

langObject = mw.getLanguage('simple')

local function has_value (tab, val)
    for index, value in ipairs(tab) do
        if langObject:lc(value) == langObject:lc(val) then
            return true
        end
    end
    return false
end

function p.title_case(frame)
	plain = false
	if frame.args.plain == "true" then
		plain = true
	end
	split = frame.args.split
	if split == "space" then
		split = " "
	end
	replace = split
	if frame.args.replace ~= "" then
		replace = frame.args.replace
	end
	parts = mw.text.split(frame.args.link, split, plain)
	lower = mw.text.split(frame.args.lower, ",", true)
	title = ""
	for i, part in pairs(parts) do
		if i > 1 and i < table.getn(parts) and has_value(lower, part) then
			title = title .. langObject:lc(part) .. replace
		else
			title = title .. langObject:ucfirst(langObject:lc(part)) .. replace
		end
	end
	if table.getn(parts) > 1 then
		title = string.sub(title, 0, string.len(title) - string.len(replace))
	end
	if frame.args.nolink == "true" then
		return title
	end
    return "[[" .. frame.args.link .. "|" .. title .. "]]"
end

function p.uppercase_first_letter(frame)
	uc_first_letter = langObject:ucfirst(langObject:lc(frame.args.link))
	if frame.args.nolink == "true" then
		return uc_first_letter
	end
    return "[[" .. frame.args.link .. "|" .. uc_first_letter .. "]]"
end

function p.lowercase(frame)
	lc = langObject:lc(frame.args.link)
	if frame.args.nolink == "true" then
		return lc
	end
    return "[[" .. frame.args.link .. "|" .. lc .. "]]"
end

return p